What do superoxide dismutase, glutathione peroxidase, and catalase have in common?
A. They function as natural, endogenous antioxidant enzymes in the tissues.
B. They are phytochemicals found in fruits and vegetables along with essential vitamins.
C. They are associated with B vitamin coenzymes in metabolism of carbohydrate.
D. They are necessary for digestion of protein in the duodenum of the small intestine.
E. They are, respectively, synonyms for vitamin D, vitamin K, and vitamin C.
Answer: A
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